72 lines
1.5 KiB
C
72 lines
1.5 KiB
C
#include <dangerzone/engine.h>
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#include <dangerzone/render/misc.h>
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#include <dangerzone/render/rect.h>
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#include "internal/engine_internal.h"
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#include "internal/util/error.h"
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#include <stdint.h>
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// helper function to return the correct pointer to a framebuffer for drawing selection
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uint32_t*
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get_framebuffer(
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framebuffer_e framebuffer
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) {
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switch (framebuffer) {
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case BASE:
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return game_state->framebuffer_base;
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case OVERDRAW:
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return game_state->framebuffer_overdraw;
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default:
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return game_state->framebuffer_base;
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}
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}
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// alter a pixel at an imaginary x & y coordinates
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void
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put_pixel(
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framebuffer_e framebuffer,
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unsigned int x,
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unsigned int y,
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uint32_t color
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) {
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uint32_t *current_framebuffer = get_framebuffer(framebuffer);
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uint16_t w = game_state->width;
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uint16_t h = game_state->height;
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if (x < 0 || x >= w || y < 0 || y >= h) {
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eprintf(
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"CRITICAL: attempted buffer overflow in put_pixel\n"
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"at x = %d, y = %d", x, y
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);
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} else {
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current_framebuffer[game_state->width * y + x]
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= color;
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mark_dirty_rect(x, y, 1, 1);
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}
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}
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// fill the entire framebuffer with a given color
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void
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clear_framebuffer(
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framebuffer_e framebuffer,
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uint32_t color
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) {
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uint32_t *current_framebuffer = get_framebuffer(framebuffer);
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for (size_t i = 0;
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i < (size_t)game_state->width * game_state->height;
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++i) {
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current_framebuffer[i] = color;
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}
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mark_dirty_rect(
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0,
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0,
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game_state->width,
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game_state->height
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);
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}
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